Yeah, that liquid flashing can be a pain in the cold. I’ve tried to push it a few times when temps dipped, thinking I could get away with it, but it just turned into a tacky mess that never really set up right. Ended up scraping and starting over—huge waste of time. Butyl tape’s definitely more forgiving in winter, especially if you hit it with a heat gun or leave it inside overnight. Still, like you said, nothing really beats waiting for a decent day if you can swing it... sometimes the weather just doesn’t cooperate though.
I get why butyl tape seems easier in winter, but I’ve actually had it lose adhesion after a few freeze-thaw cycles—especially if there’s any moisture around. Liquid flashing’s a pain in the cold, sure, but if you can tent the area and use a small space heater, it’ll usually cure fine. Not always practical, but sometimes worth the hassle to avoid leaks down the line.
That’s interesting—I’ve definitely had butyl tape get weirdly gooey in spring after a cold snap, but I haven’t had it peel off yet. Have you tried any of the newer hybrid tapes? Curious if those hold up better with moisture swings.
I’ve noticed the same thing with butyl tape—gets a bit tacky and almost too soft after those freeze-thaw cycles, but I haven’t had it actually detach either. I did try one of the acrylic-based hybrids last fall when I replaced a couple basement windows. It seemed to hold up better through the winter, especially where condensation was an issue, but it was trickier to reposition once it stuck down. Not sure if that’s just me not getting the hang of it or if that’s just how those tapes are.
Have you ever tried using a primer with your tapes? I’ve read that some folks swear by priming the sill and jambs first, especially in older homes where the wood isn’t perfectly smooth anymore. Wondering if that would help with adhesion during those big temperature swings.
I’ve never messed with primer, honestly. Always just slapped the tape right on, even when the wood was a bit rough. Might be worth a shot though, especially if you’re seeing lifting in the corners. What kind of primer are folks using—just regular wood primer or something special for tapes?
I’ve wondered about this myself. I’ve always just stuck the tape on, too, and it’s usually fine, but every now and then I’ll get a spot where the edge lifts up after a few months—especially around the sill where things get a bit damp. Makes me question if skipping primer is really worth the risk, or if it’s just an extra step that doesn’t do much.
Couple years back, a contractor buddy swore by using a “liquid flashing” primer—something like Henry Blueskin or Prosoco R-Guard—before putting tape down, especially on old or rough wood. He said it was more about creating a sticky surface than sealing the wood itself. I tried it on one window and honestly, that tape has held up way better than the others. But regular wood primer? I don’t know if that’s got the grab you want for tape; seems like it’s designed more for paint adhesion than adhesive tapes.
I’m still not convinced it’s always necessary, though. If the wood is clean and dry, and you’re using good tape (the stretchy stuff, not the cheapo hardware store roll), you might be fine without primer. But then again, maybe it depends on weather and how rough your sills are. My house is pushing 80 years old and nothing’s ever truly square or smooth… so maybe I should be priming more than I think.
Anyone else notice a difference between liquid flashing versus just a regular primer? Or is this one of those things where the manufacturers are just trying to sell us another product? I’m honestly torn—I don’t like adding steps unless they actually help in the long run.
But regular wood primer? I don’t know if that’s got the grab you want for tape; seems like it’s designed more for paint adhesion than adhesive tapes.
Yeah, you nailed it there. Regular primer just isn’t sticky enough for tape—tried it once and the tape started peeling after the first winter. Liquid flashing is a pain to apply, but man, it really does make a difference on those old, splintery sills. I used Prosoco on my 1940s place and haven’t had a single edge lift since. Still feels like overkill sometimes, but I’d rather do the extra step than redo tape every year.
Yeah, liquid flashing is a pain, but I’ve seen way too many tapes fail on bare wood or just primer. I did one job where the homeowner insisted on skipping it—six months later, water was sneaking in and the tape was curling up. Takes more time, but honestly, it’s worth it for that peace of mind. Those old sills are unforgiving.
Man, I hear you. Tried cutting corners with tape-only once on a 1920s place—big mistake. Even with “the good stuff,” it just didn’t stick to the old wood after a wet spring. Liquid flashing’s a drag, but it’s saved me from callbacks more than once.
- Had a similar issue with tape-only on my old bungalow—looked fine at first, but once the weather shifted, it peeled right up.
- Liquid flashing’s definitely a pain to apply, but I’ve noticed way less drafts since switching.
- Wish there was an easier tech fix for this… maybe one day. For now, I’ll take the extra step over water damage any time.